WO2019223386A1

WO2019223386A1 - Display substrate, display panel, touch-control display device and manufacturing method therefor

Info

Publication number: WO2019223386A1
Application number: PCT/CN2019/076431
Authority: WO
Inventors: 罗鸿强; 吴建君; 张光均; 赵海瑞
Original assignee: 京东方科技集团股份有限公司; 成都京东方光电科技有限公司
Priority date: 2018-05-25
Filing date: 2019-02-28
Publication date: 2019-11-28
Also published as: CN108762562B; US20200371627A1; CN108762562A; US10996779B2

Abstract

Provided are a display substrate, a display panel, a touch-control display device and a manufacturing method therefor. The display substrate comprises a display region, a non-display region, a signal line arranged in the display region, a plurality of first bonding pins of a first part which are arranged in the non-display region and used for bonding with a flexible circuit board, a plurality of first bonding pins of a second part, and a plurality of second bonding pins which are arranged in the non-display region and used for bonding with a touch-control panel, wherein the first bonding pins of the second part are connected to the signal line; and the second bonding pins are connected to the first bonding pins of the first part in one-to-one correspondence.

Description

Display substrate, display panel, touch display device and manufacturing method thereof

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201810516544.1 filed in China on May 25, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to the field of display technology, and in particular, to a display substrate, a display panel, a touch display device, and a manufacturing method thereof.

Background technique

The external touch display device is an external touch screen that is attached to the outside of the display panel. In the related art, when performing a bonding process of an external touch display device, first, a display panel and a chip-on-film (Chip, Flex, or Chip) provided with a driver IC are required. Film (COF for short) is bound to Main Flexible Circuit (Printed Circuit, MFPC for short), and the touch panel is combined with a Touch Flexible Circuit Board (Touch Flexible Circuit with Touch IC). (TFPC) binding, then, attach the touch panel to the display panel, and finally, bind the main flexible circuit board to the touch flexible circuit board. It can be seen that the binding process requires multiple bindings, and the binding process is complicated.

Summary of the Invention

An embodiment of the present disclosure provides a display substrate, including: a display area; a non-display area located on the periphery of the display area; a signal line provided in the display area; A plurality of first part first binding pins bound to the flexible circuit board; a plurality of second part first binding pins disposed in the non-display area for binding with the flexible circuit board; and setting A plurality of second binding pins in the non-display area for binding with the touch panel. The second binding pins are in one-to-one correspondence with the first binding pins of the first part.

Optionally, the display substrate is a flexible display substrate, and the non-display area includes a bending area and a non-bending area connected to the bending area; relative to the bending area, the non-bending area Close to the display area; the first part of the first binding pin and the second part of the first binding pin are disposed in the bending area.

Optionally, the second binding pin is disposed in the non-bent area.

The present disclosure also provides a display panel including the above display substrate.

The present disclosure also provides a touch display device, including the above display panel and a touch panel attached to the display panel; wherein the touch electrodes on the touch panel and a display substrate of the display panel The second binding pin is connected.

Optionally, the touch display device further includes:

A flexible circuit board on which a driving integrated circuit and a touch integrated circuit are disposed, and the driving integrated circuit is connected to the display panel through a second part of a first binding pin in a display substrate of the display panel. The touch signal integrated circuit communicates with the touch on the touch panel through the first binding pin and the second binding pin of the first part of the display substrate of the display panel. The electrodes are connected.

Optionally, the flexible circuit board includes a flip-chip film and a main flexible circuit board, the driving integrated circuit is disposed on the flip-chip film, and the touch integrated circuit is disposed on the main flexible circuit board.

Optionally, the flexible circuit board is at least partially bent to a side of the display panel away from the touch panel.

Optionally, the touch display device further includes at least one of the following:

A heat dissipation film is disposed on a side of the display panel remote from the touch panel;

A polarizer disposed on a side of the touch panel remote from the display panel;

The package cover is disposed on a side of the touch panel remote from the display panel.

Optionally, the display panel is a flexible display panel, and the non-display area includes a bending area and a non-bending area connected to the bending area; relative to the bending area, the non-bending area A display area close to the display panel; the touch display device further includes:

A laminating adhesive is used to fix the bent area on a side of the display panel away from the touch panel.

The present disclosure also provides a method for manufacturing a touch display device, including:

A display panel is provided. The display panel includes a display substrate. The display substrate includes: a display area and a non-display area located outside the display area. A plurality of first portions and first bindings are provided in the non-display area. Pins, a plurality of second binding pins of the second portion, and a plurality of second binding pins of the second portion; the first binding pins of the second portion are connected to a signal line provided in the display area; the second portion The binding pins are in one-to-one correspondence with the first binding pins of the first part;

The display panel is bound to a flexible circuit board through the first binding pin of the first part and the first binding pin of the second part, and a driving integrated circuit and touch integration are provided on the flexible circuit board. Circuit

The display panel is bonded to the touch panel, and the display panel is bound to the touch panel through the second binding pin.

Optionally, the display panel is a flexible display panel, and the non-display area includes a bent area, and the display panel is guided by the first binding pin of the first portion and the first binding pin of the second portion. After the foot is bound to the flexible circuit board, it also includes:

Bend and fix the bent area toward the side of the display panel away from the touch panel, so that the flexible circuit board is located on the side of the display panel away from the touch panel.

Optionally, before the step of bending and fixing the bent area toward a side of the display panel away from the touch panel, the method further includes:

Paste the polarizer on the touch panel;

Attaching a package cover to the polarizer;

Attaching a heat dissipation film to a side of the display panel remote from the touch panel;

Attaching an adhesive to the heat dissipation film;

Wherein, the step of bending and fixing the bent area toward a side of the display panel away from the touch panel includes:

The bending region is fixed on a side of the display panel away from the touch panel by using a glue.

The first binding pin of the first portion and the first binding pin of the second portion are disposed in the bending region.

Wherein, the non-display area further includes a non-bend area connected to the bend area; relative to the bend area, the non-bend area is close to the display area; the second binding pin It is disposed in the non-bent area.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the embodiments of the present disclosure more clearly, the drawings used in the description of the embodiments of the present disclosure are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a top view of a display panel bound to a flip-chip film and a main flexible circuit board in the related art; FIG.

2 is a side view of a display panel bound to a flip-chip film and a main flexible circuit board in the related art;

3 is a side view of a touch display device including a display panel and a touch panel in the related art bound to a flip-chip film and a main flexible circuit board;

4 is a schematic top view of a display substrate according to an embodiment of the present disclosure;

5 is a top view of a touch display device according to an embodiment of the present disclosure;

6 is a side view of a display panel and a flexible circuit board bound in a touch display device according to an embodiment of the present disclosure;

7 is a side view of a touch display device according to an embodiment of the present disclosure;

8 is a schematic flowchart of a manufacturing method of a touch display device according to an embodiment of the present disclosure;

9 is a schematic flowchart of a method for manufacturing a touch display device according to another embodiment of the present disclosure;

FIG. 10 is a schematic flowchart of a manufacturing method of a touch display device according to another embodiment of the present disclosure.

Detailed ways

To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely in combination with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are a part of embodiments of the present disclosure, but not all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person having ordinary skill in the art fall within the protection scope of the present disclosure.

Please refer to FIG. 1, FIG. 2, and FIG. 3. FIG. 1 is a top view of a display panel in the related art bound with a flip-chip film and a main flexible circuit board. FIG. 2 is a display panel in the related art Side view of a circuit board binding. FIG. 3 is a side view of a related art touch display device including a display panel and a touch panel bound to a flip-chip film and a main flexible circuit board. The display panel 50 includes a display area 10 and a non-display area 20 located on the periphery of the display area 10. A plurality of binding pins 21 are disposed in the non-display area 20.

When performing the bonding process, first, the display panel 50 needs to be bonded to a flip-chip film (COF) 30 provided with a driver IC 31 and a main flexible circuit board (MFPC) 40. Please refer to FIG. 1 and FIG. FIG. 2; Binding the touch panel 60 to a touch flexible circuit board (TFPC) 70 provided with a touch IC 71; then, attaching the touch panel 60 to the display panel 50, and finally, The main flexible circuit board 40 is bound to the touch flexible circuit board 70, please refer to FIG. 3. It can be seen that in the above binding process, multiple bindings are required, and the binding process is complicated.

In order to solve the problem that the touch display device in the related art has a complicated binding process in a binding process, please refer to FIG. 4. An embodiment of the present disclosure provides a display substrate including a display area 100 and The non-display area 200 is provided with a plurality of first binding pins 201 and a plurality of second binding pins 202. The first binding pin 201 is used for binding with a flexible circuit board, and part of the first binding pin 201 is connected to a signal line (not shown) provided in the display area 100, so that The signal line can communicate with a driver integrated circuit (Driver IC) on the flexible circuit board through the first binding pin 201. The driving integrated circuit is used to provide a driving signal for display to the display substrate. The driving signal may include a gate scan signal and a data signal. In the embodiment shown in FIG. 4, some of the first binding pins 201 are connected to signal lines in the display area 100 through signal line leads 203 provided in the non-display area 200. The signal lines may include gate lines and Data lines, etc. The second binding pins 202 are used for binding with the touch panel, and the second binding pins 202 are connected one-to-one with the other part of the first binding pins 201 so that the touch panel The upper touch electrode can communicate with a touch integrated circuit (Touch IC) on the flexible circuit board through the second binding pin 202 and the first binding pin 201. The touch integrated circuit is used to provide a touch signal to the touch panel. In actual use, the touch electrodes on the touch panel can be connected to the second binding pin 202 through a touch electrode lead or the like, thereby enabling the touch electrodes on the touch panel to pass through the first The two binding pins 202 and the first binding pin 201 are in communication with a touch integrated circuit (Touch IC) on the flexible circuit board.

In the embodiment of the present disclosure, a second binding pin 202 for binding with the touch panel is added to the display substrate, the second binding pin 202 is connected to the first binding pin 201, and the first binding lead The pin 201 is used for binding with a flexible circuit board, and a driving integrated circuit and a touch integrated circuit are simultaneously provided on the flexible circuit board. When the display panel with the display substrate is subjected to a bonding process, the touch panel can be directly bonded to the display panel with the display substrate through the second binding pin 202, and the first binding guide through the display substrate Pin 201 communicates with the touch integrated circuit on the flexible circuit board. The touch panel does not need to be separately bound to the touch flexible circuit board. At the same time, the touch control provided with the touch integrated circuit in the binding process in the related technology is reduced. The step of binding the flexible circuit board to the main flexible circuit board simplifies the bonding process.

The display substrate in the embodiment of the present disclosure may be a flexible display substrate that can be bent, or a rigid display substrate that cannot be bent. When the display substrate is a flexible display substrate, the base substrate of the display substrate is made of a flexible material, such as resin. When the display substrate is a rigid display substrate, the base substrate of the display substrate is made of a rigid material, such as glass.

Please refer to FIG. 4, when the display substrate in the embodiment of the present disclosure is a flexible display substrate, the non-display area 200 may include a bent area 210 and a non-bent area 220. When a display panel having the display substrate is bound, After the process, the bending area 210 may be bent toward the back side (non-display side) of the display panel, so that the flexible circuit board bound to the display panel is bent to the back side of the display panel, thereby achieving a narrow frame. The bending region 210 is generally disposed on a lower frame of the display panel.

In the embodiment of the present disclosure, optionally, the first binding pin 201 is disposed in the bending area 210, so that the width of the non-bending area 220 can be reduced, and a narrow frame can be further realized.

In the embodiment of the present disclosure, optionally, the second binding pin 202 is disposed in the non-bent area 220. Since the second binding pin 202 needs to be bound to the touch panel, if the second binding pin 202 is bound to the touch panel, The binding pin 202 is disposed in the bending region 210, which will inevitably increase the thickness of the bending region 210 and affect the bending. Therefore, setting the second binding pin 202 in the non-bending region 220 can avoid bending. The thickness of the region 210 is too large, which affects the problem of bending.

The display substrate in the embodiments of the present disclosure may be a liquid crystal display substrate, an organic light emitting diode (OLED) display substrate, or other types of display substrates.

The display substrate in the embodiments of the present disclosure is generally an array substrate.

An embodiment of the present disclosure further provides a display panel including the display substrate in any of the above embodiments.

The display panel in the embodiment of the present disclosure may be a liquid crystal display panel, an organic light emitting diode display panel, or other types of display panels.

When the display panel of the embodiment of the present disclosure is a liquid crystal display panel, the liquid crystal display panel may include an opposite substrate (usually a color filter substrate) in addition to the display substrate (usually an array substrate) in the above embodiments. And a liquid crystal layer sandwiched between the display substrate and the opposite substrate.

When the display panel in the embodiment of the present disclosure is an organic light emitting diode display panel, the organic light emitting diode display panel may include a package substrate and the like in addition to the display substrate (usually an array substrate) in the above embodiments.

An embodiment of the present disclosure further provides a touch display device, which includes the display panel in the above embodiment and a touch panel attached to the display panel.

It should be noted that, in the embodiment of the present disclosure, when the touch panel and the display panel are bonded, a side of the touch panel having a touch electrode faces the display panel, so that the touch electrode can be connected to the display panel. The second binding pin is connected.

The touch display device in the embodiment of the present disclosure may further include: a flexible circuit board provided with a driving integrated circuit and a touch integrated circuit, and the flexible circuit board passes a plurality of first integrated circuits on the display panel. A binding pin is bound to the display panel, the driving integrated circuit is in communication with a signal line on the display panel through a portion of the first binding pin, and the touch integrated circuit is connected through another portion of the The first binding pin and the second binding pin are in communication with a touch electrode on the touch panel.

In some optional embodiments of the present disclosure, the flexible circuit board includes: a chip-on-film (Flex, Chip, On-Film, or COF) and a main flexible circuit board (Main Flexible Printed Circuit, MFPC) The driving integrated circuit is disposed on the flip-chip film, and the touch integrated circuit is disposed on the main flexible circuit board.

In some optional embodiments of the present disclosure, the flexible circuit board is at least partially bent to a side of the display panel away from the touch panel (that is, a back side of the display panel).

In some embodiments, the display panel may be a flexible display panel, the display panel includes a display area and a non-display area, and the non-display area further includes a bent area, and the first binding pin is provided at In the bending area, after the display panel is bound to the flexible circuit board through the first binding pin, the bending area can be bent toward the back side (non-display side) of the display panel, so that The flexible circuit board bound to the display panel is bent to the back side of the display panel.

In other embodiments, after the display panel is bound to the flexible circuit board, the flexible circuit board (such as a flip-chip film) may also be directly bent, and a part of the flexible circuit board may be bent to the back side of the display panel. In this case, the display panel may be a flexible display panel or a rigid display panel.

In some optional embodiments of the present disclosure, the touch display device according to the embodiments of the present disclosure includes:

A display panel comprising a display substrate, the display substrate comprising: a display area and a non-display area located outside the display area; the non-display area is provided with a plurality of first binding pins and a plurality of Second binding pins; part of the first binding pins are connected to signal lines provided in the display area; the second binding pins are one by one with another part of the first binding pins Correspondingly connected; the display panel is a flexible display panel, the non-display area includes a bent area and a non-bent area, the first binding pin is disposed in the bent area, and the second binding The pins are disposed in the non-bent area;

A touch panel is attached to the display panel, and the touch panel is bound to the display panel through the second binding pin;

A flexible circuit board includes a flip-chip film and a main flexible circuit board. A drive integrated circuit is provided on the flip-chip film. A touch control integrated circuit is provided on the main flexible circuit board. The flip-chip film passes through the first The binding pins are bound to the display panel, and the flexible circuit board is bent to a side of the display panel away from the touch panel.

The touch display device in the embodiment of the present disclosure may be a liquid crystal display device, an organic light emitting diode display device, or another type of display device.

Please refer to FIGS. 5, 6 and 7. FIG. 5 is a top view of a touch display device according to an embodiment of the present disclosure, and FIG. 6 is a side view of a display panel and a flexible circuit board in the touch display device according to an embodiment of the present disclosure. 7 is a side view of a touch display device according to an embodiment of the present disclosure. The touch display device includes a display panel 500, a touch panel 600, and a flexible circuit board bound to the display panel 500.

The display panel 500 includes a display substrate including a display area and a non-display area. A first binding pin 201 is provided in the non-display area for binding with a flexible circuit board. At the same time, a non-display area is further provided with The second binding pin 202 is used for binding with the touch panel 600.

The touch panel 600 is attached to the display side of the display panel 500 through an optical adhesive (OCA) 703. The touch panel 600 includes a touch substrate 601 and a touch electrode 602 disposed on the touch substrate 601. The touch electrode 602 faces the display. The panel 500 is provided so as to be able to be connected to the second binding pin 202.

The flexible circuit board includes: a flip-chip film 300 and a main flexible circuit board 400. The flip-chip film 300 is provided with a driving integrated circuit 301, and the main flexible circuit board 400 is provided with a touch integrated circuit 401. The driving integrated circuit 301 communicates with the signal lines in the display area of the display panel 500 through a part of the first binding pin 201; the touch integrated circuit 401 uses another part of the first binding pin 201 and the second binding pin 202 Is in communication with the touch electrode 602 on the touch panel 600.

In the embodiment of the present disclosure, a second binding pin 202 for binding with the touch panel 600 is added to the display panel 500, the second binding pin 202 is connected to the first binding pin 201, and the first binding The fixed pin 201 is used for binding with a flexible circuit board, and a driving integrated circuit and a touch integrated circuit are simultaneously provided on the flexible circuit board. When the touch display device with the display panel 500 is bound, the touch panel 600 can be directly bonded to the display panel 500 through the second binding pin 202, and the first binding pin 201 and The touch integrated circuit 401 on the flexible circuit board is connected, and the touch panel 600 does not need to be separately bound to the touch flexible circuit board. At the same time, the touch flexibility provided with the touch integrated circuit in the binding process in the related technology is reduced The step of binding the circuit board to the main flexible circuit board simplifies the bonding process.

The display panel 500 in the embodiment of the present disclosure is a flexible display panel. Please refer to FIG. 7. In order to achieve a narrow frame, the display panel 500 in the embodiment of the present disclosure includes a bent area, and the bent area may be toward the back of the display panel 500 The non-display side) is bent so that the flexible circuit board (the flip-chip film 300 and the main flexible circuit board 400) is located on the back side of the display panel 500. The bent area is located on a lower frame of the touch display device. As can be seen from FIG. 7, the width of the lower frame 800 of the touch display device is equal to a, where a is the width from the display area (Panel AA) of the display panel 500 to the panel bending point (Panel Bending Point).

Meanwhile, please refer to FIG. 3. The display panel 50 of the touch display device in the related art also includes a bending area, which can be bent toward the back side (non-display side) of the display panel 50 so that the main flexible circuit board 40 is located on the display panel. At the same time, the touch flexible circuit board 70 can also be bent toward the back side of the display panel 50 so that the touch flexible circuit board 70 is located on the back side of the display panel 50. The bent area is located on a lower frame of the touch display device. It can be seen from FIG. 3 that the width of the lower frame 80 of the touch display device is equal to a + b, where a is the width of the display area of the display panel (Panel AA) to the display panel bending point (Panel Bending Point), b is the width from the bending point of the display panel to the bending point of the touch flexible circuit board 70, usually b≥0.3 mm. As can be seen from Figure 3, the bending area needs to complete two layers of bending (the bending of the main flexible circuit board 40 and the bending of the touch flexible circuit board 70). The width of the bending area is large, which is not conducive to ultra-narrow The implementation of the border.

Compared with the touch display device in the related art shown in FIG. 3, it can be known that, since the touch panel 600 in the embodiment of the present disclosure can be directly bound to the display panel 500, the display panel 500 is integrated with the main flexible circuit board 400. The touch integrated circuit 401 is connected, so only one layer of bending is needed in the bending area, so that the width of the bending area becomes smaller (compared to FIG. 3, reducing b), which is beneficial to the realization of ultra-narrow bezels. .

The touch display device in the embodiment of the present disclosure may further include at least one of the following:

The laminating adhesive 701 is used to fix the bent display panel 500 to the back side of the display panel 500. The laminating adhesive 701 may be foam.

A heat dissipation film (SCF) 702, which is disposed on a side of the display panel 500 away from the touch panel, and is configured to dissipate heat from the display panel 500;

A polarizer 704 is disposed on a side of the touch panel 600 remote from the display panel 500;

The package cover 705 is disposed on a side of the touch panel 600 remote from the display panel 500. The package cover 705 is usually a glass cover.

Please refer to FIG. 8. FIG. 8 is a schematic flowchart of a manufacturing method of a touch display device according to an embodiment of the present disclosure. The manufacturing method includes:

Step S11: A display panel is provided. The display panel includes a display substrate. The display substrate includes a display area and a non-display area located on the periphery of the display area. A plurality of first bindings are provided in the non-display area. A fixed pin and a plurality of second binding pins; part of the first binding pin is connected to a signal line provided in the display area; the second binding pin is connected to another part of the first binding pin One-to-one corresponding connection of fixed pins;

Step S12: Binding the display panel to a flexible circuit board through the first binding pin, where the flexible circuit board includes a driving integrated circuit and a touch integrated circuit;

Step S13: bonding the display panel to the touch panel, and binding the display panel to the touch panel through the second binding pin.

In some optional embodiments of the present disclosure, the display panel is a flexible display panel, and the non-display area includes a bent area. After the display panel is bound to the flexible circuit board through a first binding pin, Including: bending and fixing the bent area toward a side of the display panel away from the touch panel, so that the flexible circuit board is located at a side of the display panel away from the touch panel .

In some optional embodiments of the present disclosure, please refer to FIG. 9. A method for manufacturing a touch display device according to an embodiment of the present disclosure includes:

Step S21: A display panel is provided. The display panel includes a display substrate. The display substrate includes a display area and a non-display area located on the periphery of the display area. A plurality of first bindings are provided in the non-display area. A fixed pin and a plurality of second binding pins; part of the first binding pin is connected to a signal line provided in the display area; the second binding pin is connected to another part of the first binding pin The fixed pins are connected one-to-one correspondingly; the display panel is a flexible display panel, the non-display area includes a bent area and a non-bent area, and the first binding pin is disposed in the bent area. The second binding pin is disposed in the non-bent area;

Step S22: Binding the display panel to a flexible circuit board through the first binding pin. The flexible circuit board includes a flip-chip film and a main flexible circuit board, and the flip-chip film is provided with a driving integrated circuit. A touch integrated circuit is provided on the main flexible circuit board, and the flip-chip film is bound to the display panel through the first binding pin;

Step S23: bonding the display panel to the touch panel, and binding the display panel to the touch panel through the second binding pin;

Step S24: Bend and fix the bent area toward a side of the display panel away from the touch panel, so that the flexible circuit board is located at a side of the display panel away from the touch panel. side.

Please refer to FIG. 5, FIG. 6, FIG. 7, and FIG. 10. FIG. 10 is a schematic flowchart of a method for manufacturing a touch display device according to another embodiment of the present disclosure. The method may include the following steps:

Step S31: forming a display panel 500. The display panel 500 includes a display substrate. The display substrate includes a display area 100 and a non-display area 200. The non-display area 200 is provided with a first binding pin 201 and a second binding. Fixed pin (Touch Panel Bonding Pin) 202, the second binding pin 202 and a part of the first binding pin 201 (also referred to as the first part of the first binding pin) are connected one by one;

Step S32: Binding the display panel 500 to the flip-chip film 300 and the main flexible circuit board 400 through a part of the first bonding pin 201 (also referred to as a second part of the first bonding pin), and the flip-chip film A driving integrated circuit 301 is provided on 300, and a touch integrated circuit 401 is provided on the main flexible circuit board 400;

Step S33: bonding the display panel 500 and the touch panel 600 through the optical glue 703, and the touch electrodes 602 on the touch panel 600 face the display panel 500 during bonding;

Step S34: Binding the display panel 500 and the touch panel 600 through the second binding pin 202, so that the touch electrode 602 on the touch panel 600 can pass the second binding pin 202 and the first part A binding pin 201 is in communication with the touch integrated circuit 401 on the FPC400;

Step S35: attach the polarizer 704 to the touch panel 600;

Step S36: attaching the packaging cover 705 to the polarizer 704;

Step S37: attach the heat dissipation film 702 to a side of the display panel 500 far from the touch panel 600;

Step S38: attach the adhesive 701 to the heat dissipation film 702;

Step S39: Bend the bent area of the display panel 500 to the side of the display panel 500 away from the touch panel 600, and fix the display panel 500 to a side of the display panel 500 away from the touch panel 600 with adhesive side.

Unless otherwise defined, the technical or scientific terms used in the present disclosure shall have the ordinary meanings understood by those with ordinary skills in the field to which the present disclosure belongs. The terms “first”, “second”, and the like used in this disclosure do not indicate any order, quantity, or importance, but are only used to distinguish different components. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship also changes accordingly.

The above is an optional implementation of the present disclosure. It should be noted that for those of ordinary skill in the art, without departing from the principles described in the present disclosure, several improvements and retouches can be made. These improvements and retouches It should also be regarded as the scope of protection of this disclosure.

Claims

A display substrate includes:

Display area;

A non-display area located outside the display area;

A signal line disposed in the display area;

A plurality of first part first binding pins disposed in the non-display area and used for binding with a flexible circuit board;

A plurality of second part first binding pins provided in the non-display area for binding with the flexible circuit board; and

A plurality of second binding pins disposed in the non-display area and used for binding with the touch panel;

The first binding pin of the second part is connected to the signal line;

The second binding pins are in one-to-one correspondence with the first binding pins of the first part.
The display substrate according to claim 1, wherein the display substrate is a flexible display substrate, and the non-display area includes a bend area and a non-bend area connected to the bend area; with respect to the bend Area, the non-bent area is close to the display area; the first part of the first binding pin and the second part of the first binding pin are disposed in the bent area.
The display substrate according to claim 2, wherein the second binding pin is disposed in the non-bent area.
A display panel comprising the display substrate according to any one of claims 1-3.
A touch display device comprising the display panel according to claim 4 and a touch panel attached to the display panel; wherein the touch electrodes on the touch panel and the display of the display panel The second binding pin in the substrate is connected.
The touch display device according to claim 5, further comprising: a flexible circuit board;

Wherein, the flexible circuit board is provided with a driving integrated circuit and a touch integrated circuit, and the driving integrated circuit is connected to the display panel through a second binding pin in the display substrate of the display panel. The signal line is connected; the touch integrated circuit is in communication with the touch electrodes on the touch panel through a first part of the first binding pin and the second binding pin in the display substrate of the display panel.
The touch display device according to claim 6, wherein the flexible circuit board comprises: a flip-chip film and a main flexible circuit board, the driving integrated circuit is disposed on the flip-chip film, and the touch integrated circuit It is arranged on the main flexible circuit board.
The touch display device according to claim 6 or 7, wherein the flexible circuit board is at least partially bent to a side of the display panel away from the touch panel.
The touch display device according to claim 5, further comprising at least one of the following:

A heat dissipation film is disposed on a side of the display panel remote from the touch panel;

A polarizer disposed on a side of the touch panel remote from the display panel;

The package cover is disposed on a side of the touch panel remote from the display panel.
The touch display device according to claim 5, wherein the display panel is a flexible display panel, and the non-display area includes a bent area and a non-bent area connected to the bent area; with respect to the A bent area, the non-bent area is close to a display area of the display panel; the touch display device further includes a laminating adhesive;

The laminating adhesive fixes the bent area on a side of the display panel away from the touch panel.
A method for manufacturing a touch display device includes:

A display panel is provided. The display panel includes a display substrate. The display substrate includes a display area and a non-display area located on the periphery of the display area. The non-display area is provided with a plurality of first parts and a first binding. The first binding pin of the second part and a plurality of second binding pins; the first binding pin of the second part is connected to a signal line provided in the display area; The two binding pins are in one-to-one correspondence with the first binding pins of the first part;

The display panel is bound to a flexible circuit board through the first binding pin of the first part and the first binding pin of the second part, and a driving integrated circuit and touch integration are provided on the flexible circuit board. Circuit

The display panel is bonded to the touch panel, and the display panel is bound to the touch panel through the second binding pin.
The method for manufacturing a touch display device according to claim 11, wherein the display panel is a flexible display panel, the non-display area includes a bent area, and the display panel is first bound through the first part After the pin and the first binding pin of the second part are bound to the flexible circuit board, the method further includes:

Bend and fix the bent area toward the side of the display panel away from the touch panel, so that the flexible circuit board is located on the side of the display panel away from the touch panel.
The method for manufacturing a touch display device according to claim 12, wherein:

Before the step of bending and fixing the bent area toward a side of the display panel away from the touch panel, the method further includes:

Paste the polarizer on the touch panel;

Attaching a package cover to the polarizer;

Attaching a heat dissipation film to a side of the display panel remote from the touch panel;

A laminating adhesive is attached to the heat dissipation film.
The method for manufacturing a touch display device according to claim 12, wherein the step of bending and fixing the bent area toward a side of the display panel away from the touch panel comprises:

The bending region is fixed on a side of the display panel away from the touch panel by using a glue.
The method for manufacturing a touch display device according to claim 12, wherein the first part of the first binding pin and the second part of the first binding pin are disposed in the bending area.
The method of manufacturing a touch display device according to claim 15, wherein the non-display area further comprises a non-bend area connected to the bend area; and the non-bend area is opposite to the bend area An area is close to the display area; the second binding pin is disposed in the non-bent area.